ARM: initrd: disable initrds outside of memory

[karo-tx-linux.git] / arch / arm / mm / cache-fa.S

diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S
index a89444a3c016f0c2ecee35d38655b109664bc91b..1fa6f71470de52458208eecc20223921b632146d 100644 (file)
--- a/arch/arm/mm/cache-fa.S
+++ b/arch/arm/mm/cache-fa.S
@@ -37,6 +37,17 @@
 /* FIXME: put optimal value here. Current one is just estimation */
 #define CACHE_DLIMIT   (CACHE_DSIZE * 2)
 
+/*
+ *     flush_icache_all()
+ *
+ *     Unconditionally clean and invalidate the entire icache.
+ */
+ENTRY(fa_flush_icache_all)
+       mov     r0, #0
+       mcr     p15, 0, r0, c7, c5, 0           @ invalidate I cache
+       mov     pc, lr
+ENDPROC(fa_flush_icache_all)
+
 /*
  *     flush_user_cache_all()
  *
@@ -157,7 +168,7 @@ ENTRY(fa_flush_kern_dcache_area)
  *     - start  - virtual start address
  *     - end    - virtual end address
  */
-ENTRY(fa_dma_inv_range)
+fa_dma_inv_range:
        tst     r0, #CACHE_DLINESIZE - 1
        bic     r0, r0, #CACHE_DLINESIZE - 1
        mcrne   p15, 0, r0, c7, c14, 1          @ clean & invalidate D entry
@@ -180,7 +191,7 @@ ENTRY(fa_dma_inv_range)
  *     - start  - virtual start address
  *     - end    - virtual end address
  */
-ENTRY(fa_dma_clean_range)
+fa_dma_clean_range:
        bic     r0, r0, #CACHE_DLINESIZE - 1
 1:     mcr     p15, 0, r0, c7, c10, 1          @ clean D entry
        add     r0, r0, #CACHE_DLINESIZE
@@ -205,17 +216,42 @@ ENTRY(fa_dma_flush_range)
        mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer
        mov     pc, lr
 
+/*
+ *     dma_map_area(start, size, dir)
+ *     - start - kernel virtual start address
+ *     - size  - size of region
+ *     - dir   - DMA direction
+ */
+ENTRY(fa_dma_map_area)
+       add     r1, r1, r0
+       cmp     r2, #DMA_TO_DEVICE
+       beq     fa_dma_clean_range
+       bcs     fa_dma_inv_range
+       b       fa_dma_flush_range
+ENDPROC(fa_dma_map_area)
+
+/*
+ *     dma_unmap_area(start, size, dir)
+ *     - start - kernel virtual start address
+ *     - size  - size of region
+ *     - dir   - DMA direction
+ */
+ENTRY(fa_dma_unmap_area)
+       mov     pc, lr
+ENDPROC(fa_dma_unmap_area)
+
        __INITDATA
 
        .type   fa_cache_fns, #object
 ENTRY(fa_cache_fns)
+       .long   fa_flush_icache_all
        .long   fa_flush_kern_cache_all
        .long   fa_flush_user_cache_all
        .long   fa_flush_user_cache_range
        .long   fa_coherent_kern_range
        .long   fa_coherent_user_range
        .long   fa_flush_kern_dcache_area
-       .long   fa_dma_inv_range
-       .long   fa_dma_clean_range
+       .long   fa_dma_map_area
+       .long   fa_dma_unmap_area
        .long   fa_dma_flush_range
        .size   fa_cache_fns, . - fa_cache_fns